Complaint
Maleic anhydride, referred to as maleic anhydride, also known as "maleic anhydride", is the anhydride of maleic acid. A colorless or white solid with a sour taste at room temperature with the formula C4H2O3. Molecular weight 98.06. Needle-like crystals are obtained from chlo roform or ether. Melting point 60 °C, boiling point Chemicalbook 82 °C (1.8665 kPa), relative density 1.31460. Soluble in a cetone, chlor oform, ether, slightly soluble in petroleum ether. Dissolved in water to form cis-butenedioic acid, dissolved in alcohol to form esters, can be combined with compounds containing conjugated double bonds for diene synthesis reaction
| Characteristics | Units | Guaranteed Values | Results |
| Appearance | White briquettes | White briquettes | |
| Purity(by MA) | WT% | 99.5 min | 99.71 |
| Molten Colour | APHA | 25 Max | 13 |
| Solidifying Point | ºC | 52.5 Min | 52.7 |
| Ash | WT% | 0.005 Max | <0.001 |
| Iron | PPM | 3 Max | 0.32 |
Weight:20/25 per ingot
Malic anhydride, also known as maleic anhydride, maleic anhydride, dehydrated malic anhydride, is an important unsaturated organic anhydride basic raw materials, in the production of pesticides for the synthesis of organophosphorus insecticide m alathion intermediate maleic acid diethyl ester, pyridazine thion intermediate Chemicalbook 1-phenyl-3,6-dihydroxypyridazine, as well as pyrethroid insecticide ammethrin, fungicide, clodan intermediates, in addition, also used in the production of unsaturated polyester resin, ink additives, papermaking additives, Coatings, pharmaceutical industry, food industry, etc.
Hebei Rongxintong Industrial Co., Ltd. is the specialized chemical, processing and sales enterprise.
our products enjoy good reputation both at home and abroad.Our trade partners are around the world, mainly in America,Europe,Australia,South East Asia ,Middle East and South Africa. In order to serve customers well, the company has established special technical department and after-sale service department. We will make careful reply if you get any question.
The company with all the employees will constantly purse excellent quality, perfect brand and our image, and adheres to our spirit of honesty, diligence, seeking truth and progress and insists on business philosophy of quality as life and service as soul. We will satisfy market demands by top products and better service, and will welcome market challenge forever.
1. Are you a trading company or a factory?
Yes, we are a factory with nearly 20 years of experience.
2. How do you control the quality?
We have professional quality inspectors and keep samples of each order for two years, so we also support third party testing, such as SGS, BV, etc.
3. What are your payment terms?
T/T or L/C AT SIGHT for first time cooperation.
4. What is the weight of your unit package?
25kg or 50kg with PE bag or as your requirement.
5. Can I get samples before I order?
Yes, of course you can, we will give you free samples within 3 days.
6. Can I package it according to my logo?
Of course you can, you just need to provide the package design.
7. What is the delivery time?
The delivery time for sample orders is usually 4-7 working days after receiving full payment. For bulk orders, it is about 10-20 working days after receipt of deposit.
8. What is the port of loading?
Usually Shanghai, Qingdao or Tianjin (major ports in China).
